Normalize user-facing defaults

roles/configuration/tasks/grub.yml

@@ -1,6 +1,6 @@
 ---
 - name: Configure grub defaults
-  when: not is_rhel | default(false)
+  when: not is_rhel | bool
   ansible.builtin.lineinfile:
     dest: /mnt/etc/default/grub
     regexp: "{{ item.regexp }}"
@@ -12,7 +12,7 @@
       line: GRUB_TIMEOUT=1
 
 - name: Ensure grub defaults file exists for RHEL-based systems
-  when: is_rhel | default(false)
+  when: is_rhel | bool
   block:
     - name: Build RHEL kernel command line defaults
       vars:
@@ -106,7 +106,7 @@
         label: "{{ item.path }}"
 
 - name: Enable GRUB cryptodisk for encrypted /boot
-  when: partitioning_grub_enable_cryptodisk | default(false) | bool
+  when: partitioning_grub_enable_cryptodisk | bool
   ansible.builtin.lineinfile:
     path: /mnt/etc/default/grub
     regexp: '^GRUB_ENABLE_CRYPTODISK='